#include <syscon.h>
#include <div64.h>
#include <dt-bindings/clock/g12a-clkc.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
#include "clk_meson.h"
+/* This driver support only basic clock tree operations :
+ * - Can calculate clock frequency on a limited tree
+ * - Can Read muxes and basic dividers (0-based only)
+ * - Can enable/disable gates with limited propagation
+ * - Can reparent without propagation, only on muxes
+ * - Can set rates without reparenting
+ * This driver is adapted to what is actually supported by U-Boot
+ */
+
+/* Only the clocks ids we don't want to expose, such as the internal muxes
+ * and dividers of composite clocks, will remain defined here.
+ */
+#define CLKID_MPEG_SEL 8
+#define CLKID_MPEG_DIV 9
+#define CLKID_SD_EMMC_A_CLK0_SEL 63
+#define CLKID_SD_EMMC_A_CLK0_DIV 64
+#define CLKID_SD_EMMC_B_CLK0_SEL 65
+#define CLKID_SD_EMMC_B_CLK0_DIV 66
+#define CLKID_SD_EMMC_C_CLK0_SEL 67
+#define CLKID_SD_EMMC_C_CLK0_DIV 68
+#define CLKID_MPLL0_DIV 69
+#define CLKID_MPLL1_DIV 70
+#define CLKID_MPLL2_DIV 71
+#define CLKID_MPLL3_DIV 72
+#define CLKID_MPLL_PREDIV 73
+#define CLKID_FCLK_DIV2_DIV 75
+#define CLKID_FCLK_DIV3_DIV 76
+#define CLKID_FCLK_DIV4_DIV 77
+#define CLKID_FCLK_DIV5_DIV 78
+#define CLKID_FCLK_DIV7_DIV 79
+#define CLKID_FCLK_DIV2P5_DIV 100
+#define CLKID_FIXED_PLL_DCO 101
+#define CLKID_SYS_PLL_DCO 102
+#define CLKID_GP0_PLL_DCO 103
+#define CLKID_HIFI_PLL_DCO 104
+#define CLKID_VPU_0_DIV 111
+#define CLKID_VPU_1_DIV 114
+#define CLKID_VAPB_0_DIV 118
+#define CLKID_VAPB_1_DIV 121
+#define CLKID_HDMI_PLL_DCO 125
+#define CLKID_HDMI_PLL_OD 126
+#define CLKID_HDMI_PLL_OD2 127
+#define CLKID_VID_PLL_SEL 130
+#define CLKID_VID_PLL_DIV 131
+#define CLKID_VCLK_SEL 132
+#define CLKID_VCLK2_SEL 133
+#define CLKID_VCLK_INPUT 134
+#define CLKID_VCLK2_INPUT 135
+#define CLKID_VCLK_DIV 136
+#define CLKID_VCLK2_DIV 137
+#define CLKID_VCLK_DIV2_EN 140
+#define CLKID_VCLK_DIV4_EN 141
+#define CLKID_VCLK_DIV6_EN 142
+#define CLKID_VCLK_DIV12_EN 143
+#define CLKID_VCLK2_DIV2_EN 144
+#define CLKID_VCLK2_DIV4_EN 145
+#define CLKID_VCLK2_DIV6_EN 146
+#define CLKID_VCLK2_DIV12_EN 147
+#define CLKID_CTS_ENCI_SEL 158
+#define CLKID_CTS_ENCP_SEL 159
+#define CLKID_CTS_VDAC_SEL 160
+#define CLKID_HDMI_TX_SEL 161
+#define CLKID_HDMI_SEL 166
+#define CLKID_HDMI_DIV 167
+#define CLKID_MALI_0_DIV 170
+#define CLKID_MALI_1_DIV 173
+
+#define CLKID_XTAL 0x10000000
+
#define XTAL_RATE 24000000
struct meson_clk {
struct regmap *map;
};
+static ulong meson_div_get_rate(struct clk *clk, unsigned long id);
+static ulong meson_div_set_rate(struct clk *clk, unsigned long id, ulong rate,
+ ulong current_rate);
+static ulong meson_mux_set_parent(struct clk *clk, unsigned long id,
+ unsigned long parent_id);
+static ulong meson_mux_get_rate(struct clk *clk, unsigned long id);
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned long id,
+ ulong rate, ulong current_rate);
+static ulong meson_mux_get_parent(struct clk *clk, unsigned long id);
static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id);
#define NUM_CLKS 178
MESON_GATE(CLKID_SD_EMMC_C, HHI_GCLK_MPEG0, 26),
MESON_GATE(CLKID_ETH, HHI_GCLK_MPEG1, 3),
MESON_GATE(CLKID_UART1, HHI_GCLK_MPEG1, 16),
+ MESON_GATE(CLKID_USB, HHI_GCLK_MPEG1, 25),
+ MESON_GATE(CLKID_HTX_PCLK, HHI_GCLK_MPEG2, 4),
+ MESON_GATE(CLKID_USB1_DDR_BRIDGE, HHI_GCLK_MPEG2, 8),
+ MESON_GATE(CLKID_VPU_INTR, HHI_GCLK_MPEG2, 25),
/* Peripheral Gates */
+ MESON_GATE(CLKID_FCLK_DIV2, HHI_FIX_PLL_CNTL1, 24),
+ MESON_GATE(CLKID_FCLK_DIV3, HHI_FIX_PLL_CNTL1, 20),
+ MESON_GATE(CLKID_FCLK_DIV4, HHI_FIX_PLL_CNTL1, 21),
+ MESON_GATE(CLKID_FCLK_DIV5, HHI_FIX_PLL_CNTL1, 22),
+ MESON_GATE(CLKID_FCLK_DIV7, HHI_FIX_PLL_CNTL1, 23),
MESON_GATE(CLKID_SD_EMMC_B_CLK0, HHI_SD_EMMC_CLK_CNTL, 23),
MESON_GATE(CLKID_SD_EMMC_C_CLK0, HHI_NAND_CLK_CNTL, 7),
+ MESON_GATE(CLKID_VPU_0, HHI_VPU_CLK_CNTL, 8),
+ MESON_GATE(CLKID_VPU_1, HHI_VPU_CLK_CNTL, 24),
+ MESON_GATE(CLKID_VAPB_0, HHI_VAPBCLK_CNTL, 8),
+ MESON_GATE(CLKID_VAPB_1, HHI_VAPBCLK_CNTL, 24),
+ MESON_GATE(CLKID_VAPB, HHI_VAPBCLK_CNTL, 30),
+ MESON_GATE(CLKID_HDMI, HHI_HDMI_CLK_CNTL, 8),
};
-static int meson_set_gate(struct clk *clk, bool on)
+static int meson_set_gate_by_id(struct clk *clk, unsigned long id, bool on)
{
struct meson_clk *priv = dev_get_priv(clk->dev);
struct meson_gate *gate;
- if (clk->id >= ARRAY_SIZE(gates))
+ debug("%s: %sabling %ld\n", __func__, on ? "en" : "dis", id);
+
+ /* Propagate through muxes */
+ switch (id) {
+ case CLKID_VPU:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU), on);
+ case CLKID_VAPB_SEL:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_SEL), on);
+ }
+
+ if (id >= ARRAY_SIZE(gates))
return -ENOENT;
- gate = &gates[clk->id];
+ gate = &gates[id];
if (gate->reg == 0)
return 0;
+ debug("%s: really %sabling %ld\n", __func__, on ? "en" : "dis", id);
+
regmap_update_bits(priv->map, gate->reg,
BIT(gate->bit), on ? BIT(gate->bit) : 0);
+ /* Propagate to next gate(s) */
+ switch (id) {
+ case CLKID_VAPB:
+ return meson_set_gate_by_id(clk, CLKID_VAPB_SEL, on);
+ case CLKID_VAPB_0:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_0_SEL), on);
+ case CLKID_VAPB_1:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_0_SEL), on);
+ case CLKID_VPU_0:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU_0_SEL), on);
+ case CLKID_VPU_1:
+ return meson_set_gate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU_1_SEL), on);
+ }
+
return 0;
}
static int meson_clk_enable(struct clk *clk)
{
- return meson_set_gate(clk, true);
+ return meson_set_gate_by_id(clk, clk->id, true);
}
static int meson_clk_disable(struct clk *clk)
{
- return meson_set_gate(clk, false);
+ return meson_set_gate_by_id(clk, clk->id, false);
+}
+
+static struct parm meson_vpu_0_div_parm = {
+ HHI_VPU_CLK_CNTL, 0, 7,
+};
+
+int meson_vpu_0_div_parent = CLKID_VPU_0_SEL;
+
+static struct parm meson_vpu_1_div_parm = {
+ HHI_VPU_CLK_CNTL, 16, 7,
+};
+
+int meson_vpu_1_div_parent = CLKID_VPU_1_SEL;
+
+static struct parm meson_vapb_0_div_parm = {
+ HHI_VAPBCLK_CNTL, 0, 7,
+};
+
+int meson_vapb_0_div_parent = CLKID_VAPB_0_SEL;
+
+static struct parm meson_vapb_1_div_parm = {
+ HHI_VAPBCLK_CNTL, 16, 7,
+};
+
+int meson_vapb_1_div_parent = CLKID_VAPB_1_SEL;
+
+static struct parm meson_hdmi_div_parm = {
+ HHI_HDMI_CLK_CNTL, 0, 7,
+};
+
+int meson_hdmi_div_parent = CLKID_HDMI_SEL;
+
+static ulong meson_div_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int rate, parent_rate;
+ struct parm *parm;
+ int parent;
+ uint reg;
+
+ switch (id) {
+ case CLKID_VPU_0_DIV:
+ parm = &meson_vpu_0_div_parm;
+ parent = meson_vpu_0_div_parent;
+ break;
+ case CLKID_VPU_1_DIV:
+ parm = &meson_vpu_1_div_parm;
+ parent = meson_vpu_1_div_parent;
+ break;
+ case CLKID_VAPB_0_DIV:
+ parm = &meson_vapb_0_div_parm;
+ parent = meson_vapb_0_div_parent;
+ break;
+ case CLKID_VAPB_1_DIV:
+ parm = &meson_vapb_1_div_parm;
+ parent = meson_vapb_1_div_parent;
+ break;
+ case CLKID_HDMI_DIV:
+ parm = &meson_hdmi_div_parm;
+ parent = meson_hdmi_div_parent;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ regmap_read(priv->map, parm->reg_off, ®);
+ reg = PARM_GET(parm->width, parm->shift, reg);
+
+ debug("%s: div of %ld is %d\n", __func__, id, reg + 1);
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ debug("%s: parent rate of %ld is %d\n", __func__, id, parent_rate);
+
+ rate = parent_rate / (reg + 1);
+
+ debug("%s: rate of %ld is %d\n", __func__, id, rate);
+
+ return rate;
+}
+
+static ulong meson_div_set_rate(struct clk *clk, unsigned long id, ulong rate,
+ ulong current_rate)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int new_div = -EINVAL;
+ unsigned long parent_rate;
+ struct parm *parm;
+ int parent;
+ int ret;
+
+ if (current_rate == rate)
+ return 0;
+
+ debug("%s: setting rate of %ld from %ld to %ld\n",
+ __func__, id, current_rate, rate);
+
+ switch (id) {
+ case CLKID_VPU_0_DIV:
+ parm = &meson_vpu_0_div_parm;
+ parent = meson_vpu_0_div_parent;
+ break;
+ case CLKID_VPU_1_DIV:
+ parm = &meson_vpu_1_div_parm;
+ parent = meson_vpu_1_div_parent;
+ break;
+ case CLKID_VAPB_0_DIV:
+ parm = &meson_vapb_0_div_parm;
+ parent = meson_vapb_0_div_parent;
+ break;
+ case CLKID_VAPB_1_DIV:
+ parm = &meson_vapb_1_div_parm;
+ parent = meson_vapb_1_div_parent;
+ break;
+ case CLKID_HDMI_DIV:
+ parm = &meson_hdmi_div_parm;
+ parent = meson_hdmi_div_parent;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ debug("%s: parent rate of %ld is %ld\n", __func__, id, parent_rate);
+
+ /* If can't divide, set parent instead */
+ if (!parent_rate || rate > parent_rate)
+ return meson_clk_set_rate_by_id(clk, parent, rate,
+ current_rate);
+
+ new_div = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ debug("%s: new div of %ld is %d\n", __func__, id, new_div);
+
+ /* If overflow, try to set parent rate and retry */
+ if (!new_div || new_div > (1 << parm->width)) {
+ ret = meson_clk_set_rate_by_id(clk, parent, rate, current_rate);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ parent_rate = meson_clk_get_rate_by_id(clk, parent);
+ if (IS_ERR_VALUE(parent_rate))
+ return parent_rate;
+
+ new_div = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ debug("%s: new new div of %ld is %d\n", __func__, id, new_div);
+
+ if (!new_div || new_div > (1 << parm->width))
+ return -EINVAL;
+ }
+
+ debug("%s: setting div of %ld to %d\n", __func__, id, new_div);
+
+ regmap_update_bits(priv->map, parm->reg_off,
+ SETPMASK(parm->width, parm->shift),
+ (new_div - 1) << parm->shift);
+
+ debug("%s: new rate of %ld is %ld\n",
+ __func__, id, meson_div_get_rate(clk, id));
+
+ return 0;
+}
+
+static struct parm meson_vpu_mux_parm = {
+ HHI_VPU_CLK_CNTL, 31, 1,
+};
+
+int meson_vpu_mux_parents[] = {
+ CLKID_VPU_0,
+ CLKID_VPU_1,
+};
+
+static struct parm meson_vpu_0_mux_parm = {
+ HHI_VPU_CLK_CNTL, 9, 3,
+};
+
+static struct parm meson_vpu_1_mux_parm = {
+ HHI_VPU_CLK_CNTL, 25, 3,
+};
+
+static int meson_vpu_0_1_mux_parents[] = {
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV5,
+ CLKID_FCLK_DIV7,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+};
+
+static struct parm meson_vapb_sel_mux_parm = {
+ HHI_VAPBCLK_CNTL, 31, 1,
+};
+
+int meson_vapb_sel_mux_parents[] = {
+ CLKID_VAPB_0,
+ CLKID_VAPB_1,
+};
+
+static struct parm meson_vapb_0_mux_parm = {
+ HHI_VAPBCLK_CNTL, 9, 2,
+};
+
+static struct parm meson_vapb_1_mux_parm = {
+ HHI_VAPBCLK_CNTL, 25, 2,
+};
+
+static int meson_vapb_0_1_mux_parents[] = {
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV5,
+ CLKID_FCLK_DIV7,
+};
+
+static struct parm meson_hdmi_mux_parm = {
+ HHI_HDMI_CLK_CNTL, 9, 2,
+};
+
+static int meson_hdmi_mux_parents[] = {
+ CLKID_XTAL,
+ CLKID_FCLK_DIV4,
+ CLKID_FCLK_DIV3,
+ CLKID_FCLK_DIV5,
+};
+
+static ulong meson_mux_get_parent(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct parm *parm;
+ int *parents;
+ uint reg;
+
+ switch (id) {
+ case CLKID_VPU:
+ parm = &meson_vpu_mux_parm;
+ parents = meson_vpu_mux_parents;
+ break;
+ case CLKID_VPU_0_SEL:
+ parm = &meson_vpu_0_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VPU_1_SEL:
+ parm = &meson_vpu_1_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_SEL:
+ parm = &meson_vapb_sel_mux_parm;
+ parents = meson_vapb_sel_mux_parents;
+ break;
+ case CLKID_VAPB_0_SEL:
+ parm = &meson_vapb_0_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_1_SEL:
+ parm = &meson_vapb_1_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_HDMI_SEL:
+ parm = &meson_hdmi_mux_parm;
+ parents = meson_hdmi_mux_parents;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ regmap_read(priv->map, parm->reg_off, ®);
+ reg = PARM_GET(parm->width, parm->shift, reg);
+
+ debug("%s: parent of %ld is %d (%d)\n",
+ __func__, id, parents[reg], reg);
+
+ return parents[reg];
+}
+
+static ulong meson_mux_set_parent(struct clk *clk, unsigned long id,
+ unsigned long parent_id)
+{
+ unsigned long cur_parent = meson_mux_get_parent(clk, id);
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ unsigned int new_index = -EINVAL;
+ struct parm *parm;
+ int *parents;
+ int i;
+
+ if (IS_ERR_VALUE(cur_parent))
+ return cur_parent;
+
+ debug("%s: setting parent of %ld from %ld to %ld\n",
+ __func__, id, cur_parent, parent_id);
+
+ if (cur_parent == parent_id)
+ return 0;
+
+ switch (id) {
+ case CLKID_VPU:
+ parm = &meson_vpu_mux_parm;
+ parents = meson_vpu_mux_parents;
+ break;
+ case CLKID_VPU_0_SEL:
+ parm = &meson_vpu_0_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VPU_1_SEL:
+ parm = &meson_vpu_1_mux_parm;
+ parents = meson_vpu_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_SEL:
+ parm = &meson_vapb_sel_mux_parm;
+ parents = meson_vapb_sel_mux_parents;
+ break;
+ case CLKID_VAPB_0_SEL:
+ parm = &meson_vapb_0_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_VAPB_1_SEL:
+ parm = &meson_vapb_1_mux_parm;
+ parents = meson_vapb_0_1_mux_parents;
+ break;
+ case CLKID_HDMI_SEL:
+ parm = &meson_hdmi_mux_parm;
+ parents = meson_hdmi_mux_parents;
+ break;
+ default:
+ /* Not a mux */
+ return -ENOENT;
+ }
+
+ for (i = 0 ; i < (1 << parm->width) ; ++i) {
+ if (parents[i] == parent_id)
+ new_index = i;
+ }
+
+ if (IS_ERR_VALUE(new_index))
+ return new_index;
+
+ debug("%s: new index of %ld is %d\n", __func__, id, new_index);
+
+ regmap_update_bits(priv->map, parm->reg_off,
+ SETPMASK(parm->width, parm->shift),
+ new_index << parm->shift);
+
+ debug("%s: new parent of %ld is %ld\n",
+ __func__, id, meson_mux_get_parent(clk, id));
+
+ return 0;
+}
+
+static ulong meson_mux_get_rate(struct clk *clk, unsigned long id)
+{
+ int parent = meson_mux_get_parent(clk, id);
+
+ if (IS_ERR_VALUE(parent))
+ return parent;
+
+ return meson_clk_get_rate_by_id(clk, parent);
}
static unsigned long meson_clk81_get_rate(struct clk *clk)
unsigned long parent_rate;
uint reg;
int parents[] = {
- -1,
+ CLKID_XTAL,
-1,
CLKID_FCLK_DIV7,
CLKID_MPLL1,
reg = (reg >> 12) & 7;
switch (reg) {
- case 0:
- parent_rate = XTAL_RATE;
- break;
case 1:
return -ENOENT;
default:
return mpll_rate_from_params(parent_rate, sdm, n2);
}
-static struct parm meson_fixed_pll_parm[3] = {
- {HHI_FIX_PLL_CNTL0, 0, 8}, /* pm */
+static struct parm meson_fixed_pll_parm[4] = {
+ {HHI_FIX_PLL_CNTL0, 0, 9}, /* pm */
{HHI_FIX_PLL_CNTL0, 10, 5}, /* pn */
{HHI_FIX_PLL_CNTL0, 16, 2}, /* pod */
+ {HHI_FIX_PLL_CNTL1, 0, 17}, /* pfrac */
};
static struct parm meson_sys_pll_parm[3] = {
- {HHI_SYS_PLL_CNTL0, 0, 8}, /* pm */
+ {HHI_SYS_PLL_CNTL0, 0, 9}, /* pm */
{HHI_SYS_PLL_CNTL0, 10, 5}, /* pn */
- {HHI_SYS_PLL_CNTL0, 16, 2}, /* pod */
+ {HHI_SYS_PLL_CNTL0, 16, 3}, /* pod */
};
static ulong meson_pll_get_rate(struct clk *clk, unsigned long id)
{
struct meson_clk *priv = dev_get_priv(clk->dev);
- struct parm *pm, *pn, *pod;
+ struct parm *pm, *pn, *pod, *pfrac = NULL;
unsigned long parent_rate_mhz = XTAL_RATE / 1000000;
- u16 n, m, od;
+ u16 n, m, od, frac;
+ ulong rate;
uint reg;
/*
pm = &meson_fixed_pll_parm[0];
pn = &meson_fixed_pll_parm[1];
pod = &meson_fixed_pll_parm[2];
+ pfrac = &meson_fixed_pll_parm[3];
break;
case CLKID_SYS_PLL:
pm = &meson_sys_pll_parm[0];
regmap_read(priv->map, pod->reg_off, ®);
od = PARM_GET(pod->width, pod->shift, reg);
- return ((parent_rate_mhz * m / n) >> od) * 1000000;
+ rate = parent_rate_mhz * m;
+
+ if (pfrac) {
+ ulong frac_rate;
+
+ regmap_read(priv->map, pfrac->reg_off, ®);
+ frac = PARM_GET(pfrac->width - 1, pfrac->shift, reg);
+
+ frac_rate = DIV_ROUND_UP_ULL((u64)parent_rate_mhz * frac,
+ 1 << (pfrac->width - 2));
+
+ if (frac & BIT(pfrac->width - 1))
+ rate -= frac_rate;
+ else
+ rate += frac_rate;
+ }
+
+ return (DIV_ROUND_UP_ULL(rate, n) >> od) * 1000000;
+}
+
+static struct parm meson_pcie_pll_parm[3] = {
+ {HHI_PCIE_PLL_CNTL0, 0, 8}, /* pm */
+ {HHI_PCIE_PLL_CNTL0, 10, 5}, /* pn */
+ {HHI_PCIE_PLL_CNTL0, 16, 5}, /* pod */
+};
+
+static ulong meson_pcie_pll_get_rate(struct clk *clk)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ struct parm *pm, *pn, *pod;
+ unsigned long parent_rate_mhz = XTAL_RATE / 1000000;
+ u16 n, m, od;
+ uint reg;
+
+ pm = &meson_pcie_pll_parm[0];
+ pn = &meson_pcie_pll_parm[1];
+ pod = &meson_pcie_pll_parm[2];
+
+ regmap_read(priv->map, pn->reg_off, ®);
+ n = PARM_GET(pn->width, pn->shift, reg);
+
+ regmap_read(priv->map, pm->reg_off, ®);
+ m = PARM_GET(pm->width, pm->shift, reg);
+
+ regmap_read(priv->map, pod->reg_off, ®);
+ od = PARM_GET(pod->width, pod->shift, reg);
+
+ return ((parent_rate_mhz * m / n) / 2 / od / 2) * 1000000;
}
static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id)
ulong rate;
switch (id) {
+ case CLKID_XTAL:
+ rate = XTAL_RATE;
+ break;
case CLKID_FIXED_PLL:
case CLKID_SYS_PLL:
rate = meson_pll_get_rate(clk, id);
case CLKID_CLK81:
rate = meson_clk81_get_rate(clk);
break;
+ case CLKID_PCIE_PLL:
+ rate = meson_pcie_pll_get_rate(clk);
+ case CLKID_VPU_0:
+ rate = meson_div_get_rate(clk, CLKID_VPU_0_DIV);
+ break;
+ case CLKID_VPU_1:
+ rate = meson_div_get_rate(clk, CLKID_VPU_1_DIV);
+ break;
+ case CLKID_VAPB:
+ rate = meson_mux_get_rate(clk, CLKID_VAPB_SEL);
+ break;
+ case CLKID_VAPB_0:
+ rate = meson_div_get_rate(clk, CLKID_VAPB_0_DIV);
+ break;
+ case CLKID_VAPB_1:
+ rate = meson_div_get_rate(clk, CLKID_VAPB_1_DIV);
+ break;
+ case CLKID_HDMI:
+ rate = meson_div_get_rate(clk, CLKID_HDMI_DIV);
+ break;
+ case CLKID_VPU_0_DIV:
+ case CLKID_VPU_1_DIV:
+ case CLKID_VAPB_0_DIV:
+ case CLKID_VAPB_1_DIV:
+ case CLKID_HDMI_DIV:
+ rate = meson_div_get_rate(clk, id);
+ break;
+ case CLKID_VPU:
+ case CLKID_VPU_0_SEL:
+ case CLKID_VPU_1_SEL:
+ case CLKID_VAPB_SEL:
+ case CLKID_VAPB_0_SEL:
+ case CLKID_VAPB_1_SEL:
+ case CLKID_HDMI_SEL:
+ rate = meson_mux_get_rate(clk, id);
+ break;
default:
if (gates[id].reg != 0) {
/* a clock gate */
return meson_clk_get_rate_by_id(clk, clk->id);
}
+static ulong meson_pcie_pll_set_rate(struct clk *clk, ulong rate)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL0, 0x20090496);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL0, 0x30090496);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL1, 0x00000000);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL2, 0x00001100);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL3, 0x10058e00);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL4, 0x000100c0);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL5, 0x68000048);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL5, 0x68000068);
+ udelay(20);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL4, 0x008100c0);
+ udelay(10);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL0, 0x34090496);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL0, 0x14090496);
+ udelay(10);
+ regmap_write(priv->map, HHI_PCIE_PLL_CNTL2, 0x00001000);
+ regmap_update_bits(priv->map, HHI_PCIE_PLL_CNTL0,
+ 0x1f << 16, 9 << 16);
+
+ return 100000000;
+}
+
+static int meson_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ return meson_mux_set_parent(clk, clk->id, parent->id);
+}
+
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned long id,
+ ulong rate, ulong current_rate)
+{
+ if (current_rate == rate)
+ return 0;
+
+ switch (id) {
+ /* Fixed clocks */
+ case CLKID_FIXED_PLL:
+ case CLKID_SYS_PLL:
+ case CLKID_FCLK_DIV2:
+ case CLKID_FCLK_DIV3:
+ case CLKID_FCLK_DIV4:
+ case CLKID_FCLK_DIV5:
+ case CLKID_FCLK_DIV7:
+ case CLKID_MPLL0:
+ case CLKID_MPLL1:
+ case CLKID_MPLL2:
+ case CLKID_CLK81:
+ if (current_rate != rate)
+ return -EINVAL;
+ case CLKID_PCIE_PLL:
+ return meson_pcie_pll_set_rate(clk, rate);
+
+ return 0;
+ case CLKID_VPU:
+ return meson_clk_set_rate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VPU), rate,
+ current_rate);
+ case CLKID_VAPB:
+ case CLKID_VAPB_SEL:
+ return meson_clk_set_rate_by_id(clk,
+ meson_mux_get_parent(clk, CLKID_VAPB_SEL),
+ rate, current_rate);
+ case CLKID_VPU_0:
+ return meson_div_set_rate(clk, CLKID_VPU_0_DIV, rate,
+ current_rate);
+ case CLKID_VPU_1:
+ return meson_div_set_rate(clk, CLKID_VPU_1_DIV, rate,
+ current_rate);
+ case CLKID_VAPB_0:
+ return meson_div_set_rate(clk, CLKID_VAPB_0_DIV, rate,
+ current_rate);
+ case CLKID_VAPB_1:
+ return meson_div_set_rate(clk, CLKID_VAPB_1_DIV, rate,
+ current_rate);
+ case CLKID_VPU_0_DIV:
+ case CLKID_VPU_1_DIV:
+ case CLKID_VAPB_0_DIV:
+ case CLKID_VAPB_1_DIV:
+ case CLKID_HDMI_DIV:
+ return meson_div_set_rate(clk, id, rate, current_rate);
+ case CLKID_HDMI:
+ return meson_clk_set_rate_by_id(clk, CLKID_HDMI_DIV,
+ rate, current_rate);
+ default:
+ return -ENOENT;
+ }
+
+ return -EINVAL;
+}
+
+static ulong meson_clk_set_rate(struct clk *clk, ulong rate)
+{
+ ulong current_rate = meson_clk_get_rate_by_id(clk, clk->id);
+ int ret;
+
+ if (IS_ERR_VALUE(current_rate))
+ return current_rate;
+
+ debug("%s: setting rate of %ld from %ld to %ld\n",
+ __func__, clk->id, current_rate, rate);
+
+ ret = meson_clk_set_rate_by_id(clk, clk->id, rate, current_rate);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ debug("clock %lu has new rate %lu\n", clk->id,
+ meson_clk_get_rate_by_id(clk, clk->id));
+
+ return 0;
+}
+
static int meson_clk_probe(struct udevice *dev)
{
struct meson_clk *priv = dev_get_priv(dev);
.disable = meson_clk_disable,
.enable = meson_clk_enable,
.get_rate = meson_clk_get_rate,
+ .set_parent = meson_clk_set_parent,
+ .set_rate = meson_clk_set_rate,
};
static const struct udevice_id meson_clk_ids[] = {
{ .compatible = "amlogic,g12a-clkc" },
+ { .compatible = "amlogic,g12b-clkc" },
+ { .compatible = "amlogic,sm1-clkc" },
{ }
};
projects / oweals / u-boot.git / blobdiff